---
id: dataconverter
title: tctl v1.17 data-converter command reference
sidebar_label: dataconverter
description: Explore the new public preview of Temporal CLI and provide your feedback. Use the tctl dataconverter command to customize Data Converter operations with Temporal Web.
toc_max_heading_level: 4
keywords:
  - cli
  - cli reference
  - tctl
  - temporal
  - temporal cli
  - temporal server
---

:::info Temporal CLI is now available

The public preview of [Temporal CLI](/cli) is now available.
We encourage you to begin using it and to provide feedback.

After the release of Temporal CLI v1.0, tctl will deprecate.

:::

The `tctl dataconverter` command enables custom [Data Converter](/dataconversion) operations.

- [tctl dataconverter web](#web)

## web

The `tctl dataconverter web` command specifies the WebSocket URL of a custom [Data Converter](/dataconversion) to use with Temporal Web.

`tctl dataconverter web --web_ui_url <url>`

The following modifiers control the behavior of the command.

### --port

Specify a port for the WebSocket URL of a custom [Data Converter](/dataconversion).
The default value is 0.

**Example**

```bash
tctl dataconverter web --web_ui_url <url> --port <value>
```

### --web_ui_url

_Required modifier_

Specify the WebSocket URL of a custom [Data Converter](/dataconversion).

**Example**

```bash
tctl dataconverter web --web_ui_url <url>
```
